Module Import Error in the Standalone Player
The module, to be correctly found by the standalone player, must be placed inside &lt;my_blender_folder&gt;/2.71/python/lib/python3.4/.

So it's completely different from the embedded player (used normally by hitting p in the game engine) (which is &lt;my_blender_folder&gt;/2.71/scripts/addons/)

I finally found it by using a import sys; print(sys.path) and using the standalone player.

This info doesn't seem to be found anywhere in the API docs strangely.